Best 4G LTE Switcher for Android.
Using this 4G LTE app you can find and search for 4G LTE signal. When you locked to 4G Mode of your phone, no other 2g/3g signals won't be caught by your phone so configure now your phone has 4G LTE network.
Keyword
4G
2g/3g to 4g convertor
4G LTE
3G to 4G
2G to 4G